DiscoverOrg vs Overloop AI: One Is Dead, the Other Has Limits
You're comparing a product that hasn't existed since 2019 to an outreach tool that caps you at 250 credits per user per month. That's not a fair fight - it's a category mismatch. Here's what you're actually choosing between, and what we'd recommend instead.
DiscoverOrg Is Gone
DiscoverOrg acquired ZoomInfo in February 2019 for $735M. By September 2019, the brands merged under "ZoomInfo Powered by DiscoverOrg." The DiscoverOrg product, interface, and brand were fully absorbed. If you're searching for DiscoverOrg in 2026, you're looking at ZoomInfo - with ZoomInfo's pricing, contracts, and feature set.
The legacy features - org charts, department-level contacts, Bombora intent signals, Scoops alerts - all live inside ZoomInfo now.
30-Second Verdict
ZoomInfo (what DiscoverOrg became): Enterprise data intelligence with 113M+ business emails and 59M+ direct dials. Typical contracts land around $15,000-$25,000/year; larger enterprise packages can run $50,000-$100,000+. Best for large sales orgs that need org charts, intent data, and deep account intelligence.
Overloop AI (formerly Prospect.io): AI-powered outreach platform with a 450M+ prospects database. $69-$99/user/month. Best for small teams automating multichannel campaigns across email and LinkedIn.
ZoomInfo (DiscoverOrg's Successor)
What it does well: Deep enterprise account intelligence - org charts, buying signals, Scoops alerts, Bombora intent data baked in. The database covers 113M+ business emails and 59M+ direct dials. If you're building an account-based selling motion, this is the kind of depth you’re paying for.
Where it falls short: TrustRadius reviews include per-license pricing anecdotes around $20,000. A Reddit post from a one-person shop calls ZoomInfo/DiscoverOrg "way too expensive" for small teams, and another thread calls out data freshness issues. If you don't need the full enterprise suite, the cost and overhead are hard to justify. For a broader view, compare options in our guide to sales prospecting databases.
Here's the thing: if you're a 200-person sales org running ABM with a $50K+ tools budget, ZoomInfo earns its keep. For everyone else, you're paying enterprise prices for features you won't touch.
ZoomInfo starts at $15K/year. Overloop caps you at 250 credits/month. Prospeo gives you 300M+ profiles with 98% email accuracy at ~$0.01 per email - with a 7-day data refresh cycle that's 6x faster than ZoomInfo's.
Stop overpaying for stale data or rationing credits.
Overloop AI
Overloop is a solid outreach tool for small teams running lean. G2 rates it 4.4/5 across 133 reviews, with users praising ease of use. G2 benchmarks show a 2-month implementation timeline and a 4-month payback period - fast for this category. It offers multichannel campaigns across email and LinkedIn, a 450M+ prospects database with AI-powered list building, and a 14-day free trial on Starter and Growth plans. If you’re evaluating the broader category, see our breakdown of SDR tools.
The credit limits are the real bottleneck. Starter ($69/mo) gives you 250 credits, 1 email account, and 3 active campaigns. Growth ($99/mo) bumps that to 500 credits, 3 email accounts, and 10 campaigns. Enterprise unlocks unlimited campaigns and Salesforce integration but requires custom pricing and includes 1,000 credits per user per month. G2 reviewers also flag limited reporting and slow customer service. If you’re building sequences at scale, our AI cold email outreach playbook can help you avoid common pitfalls.
At 250 credits/month on the Starter plan, you'll burn through database access fast doing any real volume. We've seen teams exhaust their monthly allotment in the first week of a campaign.
Head-to-Head Comparison
| Criteria | ZoomInfo (DiscoverOrg) | Overloop AI | Prospeo |
|---|---|---|---|
| Database | 113M+ emails, 59M+ dials | 450M+ prospects | 300M+ profiles, 143M+ emails |
| Verification | Not publicly specified | Not specified | 7-day refresh cycle |
| Email accuracy | ~70% (reviewer-cited) | Not specified | 98% |
| Pricing | $15K-$25K+/yr | $69-$99/user/mo | ~$0.01/email |
| Channels | Data only | Email + LinkedIn | Data only |
| Intent data | Bombora | No | Bombora (15,000 topics) |
| Org charts | Yes | No | No |
| CRM integrations | Salesforce, HubSpot | HubSpot, Pipedrive; Salesforce (Enterprise) | Salesforce, HubSpot, Smartlead, Instantly, Lemlist, Clay |
| Best for | Enterprise, $25K+ budgets | Small teams, outreach | Accurate data, self-serve |
Why This Comparison Doesn't Work
Let's be honest - this comparison is like asking "Salesforce or Mailchimp?" G2 classifies Overloop AI under AI Sales Assistant and Sales Engagement. ZoomInfo sits in Sales Intelligence. One finds contacts. The other automates how you reach them.
Most outbound teams need both layers: a data platform for accurate emails and phone numbers, and an outreach platform for sequencing touches. Buying Overloop for its built-in database is like buying a CRM for its email templates - it works, but it's not the core strength. And buying ZoomInfo when you only need verified emails is like renting a warehouse to store a bicycle. If your priority is clean inputs, start with data enrichment services and a dedicated verifier to protect deliverability.
The smartest setup we've seen: source verified contacts from a dedicated data provider, then push them into Overloop (or whatever sequencer you prefer) for multichannel campaigns. You get accurate data feeding a purpose-built outreach engine without either tool's limitations dragging you down. Native integrations with tools like Smartlead, Instantly, and Lemlist make this kind of workflow straightforward to set up. To operationalize it, follow our guide on how to connect an outreach tool to CRM.
The best outbound stack pairs accurate data with a dedicated sequencer. Prospeo feeds verified emails and direct dials into Smartlead, Instantly, Lemlist, or Overloop - so you skip the credit bottleneck entirely.
Source the data layer your outreach tools actually deserve.
Which Should You Choose?
You need enterprise account intelligence - org charts, buying signals, deep firmographic data across thousands of accounts. Go with ZoomInfo. Budget $15K-$25K/year minimum. If you’re selling complex deals, our guide to enterprise B2B sales is a useful companion.
For multichannel outreach automation - AI-written sequences, email + LinkedIn campaigns, lightweight CRM integrations - Overloop AI at $69-$99/user/month gets small teams moving fast. If you want to improve replies without changing tools, use these sales follow-up templates.
For accurate data at self-serve pricing - verified emails, direct dials, intent signals, and the flexibility to plug into whatever outreach tool you already use - Prospeo starts free and scales without contracts. If you’re troubleshooting list quality, see email bounce rate benchmarks and fixes.
Most outbound teams weighing DiscoverOrg vs Overloop AI don't need either one specifically. They need a reliable data layer and a capable sequencer. Pick the best of each rather than forcing one tool to do both jobs poorly.
FAQ
Is DiscoverOrg still available?
No. DiscoverOrg was acquired by ZoomInfo in 2019 for $735M, and the brand was fully absorbed. Legacy DiscoverOrg customers are now ZoomInfo customers. New buyers go through ZoomInfo directly, starting at $15,000-$25,000/year.
Can I use Overloop AI with a separate data provider?
Yes, and many teams do. Overloop AI's built-in database runs on credits - 250 to 1,000 per user per month depending on plan. Pairing it with a dedicated provider for bulk contact sourcing, then importing into Overloop for outreach, bypasses the credit bottleneck entirely.
Is this the right comparison to make?
Not really - they're different categories. ZoomInfo is a data platform. Overloop AI is an outreach tool. Most teams need one of each: accurate data in, automated sequences out. A purpose-built data provider at ~$0.01/email paired with a sequencer often outperforms either tool used alone.